Double magnetic holding device



1951 c. o. JAEGER I DOUBLE MAGNETIC HOLDING DEVICE Filed Aug. 9, 1949m'z'mroza. CLEMENS o. JAEGER BY ATTORN EY.

Patented Dec. 25, 1951 UNITED STATES E ATENT OFFlCE DOUBLE MAGNETICHOLDING DEVICE Clemens 0. Jaeger, Milwaukee, Wis.

Application August 9, 1949, Serial No. 109,391

2 Claims. 1

My invention relates to improvements in mag netic supports and moreparticularly to a magnet for supporting small tools and the like.

It is manifest to anyone familiar with the use of machine tools thatthere are occasions when small Wrenches, keys, or special tools are usedin adjusting the chucks or the like on the machine tools and that it isimperative that these accessories and tools he made readily available tothe operator thereby eliminating lost motion in the performance of theoperation.

The object of my invention is to provide a device that is constructed oftwo permanent magnets attached to one anotherthereby permitting one ofthe magnets to support the assembled device magnetically, to the surfaceof a metal portion of a machine tool and having the other magnetconstructed in a manner to support the tools or accessories in anaccessible manner for the convenience of the operator.

Another object of my invention is to provide a device of the characterdescribed that may be arranged to act as a support for small parts suchas bolts, nuts, cotter pins, small stampings and the like, made ofmagnet attracting metal, to make them readily accessible for an assemblyoperation or when disassembling a unit.

Still another object of my invention is to provide a device that may beconstructed to any shape or contour to fit the particular purpose forwhich it is intended.

The device is easy and economical to manufacture and may be employed formany purposes.

Other and further objects of my invention will become more apparent asthe description proceeds when taken in conjunction with the drawings inwhich:

Figure 1 is a perspective view of an assembled unit showing the twomagnets spaced apart from one another with a non-magnetic spacer plateand held in an assembled position by a pair of non-magnetic rivets.

Figure 2 is a cross-sectional view of the device shown in Figure 1.

Figure 3 is a top view of the assembled device as shown in Figure 1,magnetically held in position on the face of a portion of a machine toolshown in cross-section.

Figure 4 is a perspective view of the device as shown in Figure 1, heldin a fixed position on a plate forming a part of the machine tool, andillustrating the manner in which a double end wrench is supported by thedevice.

Figure 5 is a modified form of the device showing the magnetsconstructed of a plurality of sections, and supported by non-magneticpins.

Figure 6 is a side view of the device as shown in Figure 5 with aportion shown in cross-section and Figure '7 is a composite perspectiveview of a pair of semi-circular service plates for attaching to theauxiliary magnet forming a part of the device.

Similar characters of reference indicate corresponding parts throughoutthe several views and referring now to the same, the character 10 showsa master magnet of U-shaped formation providin respective legs l9extending outward.- ly at right angles to the body of the magnet, themagnet being constructed of a single piece of any suitable material,preferably an aluminum nickel alloy, commercially referred to as Alnico, which maintains a strong magnetic field and retains its magnetismfor a long period of time. Obviously the master magnet may be of onepiece or may be constructed of laminations, or may consist of aplurality of separate parts such as are shown by the characters I! and Hin Figures 5 and 6.

There is also an auxiliary magnet shown as l2 which may be of similarconstruction having respective legs [2, either one piece as shown inFigure 1, or it may be laminated, or may be provided with separatecontact pieces as shown by the characters l3 and 53 in Figures 5 and .6

The master magnet ic and the auxiliary magnet i 2 are insulated andseparated from one another by a non-magnetic plate I 4, and both magnetsmay be held together as a unit by means of non-magnetic metal rivets asshown at 15 in Figures 1, 2 and 3, or by separate nonmagnetic rivets asshown by the character 16 in Figures 5 and 6, or they are attached tothe nonmagnetic spacer plate l4 It is imperative that the master magnetIll be greater magnetically than the auxiliary magnet l2. The reason forthis is quite obvious as inasmuch as the master magnet l0 functions as aretaining means for supportin and holding the entire assembled unit to asurface forming a part of a machine tool or the like, as indicated bythe character I! on the drawing, it is also manifest that the attachingsurface of the master magnet It) may be of any shape or contour, flat,oval or corrugated to suit the particular purpose.

The auxiliary magnet may be provided with grooves 18 as shown in Figurel, or may be fiat to support any metal article such as a wrench shown asH3 in Figure 4, or it may be arranged for supporting contact plates asshown by the characters 20 in Figure 7, by applying screws through theapertures 2|, or in any other convenient and efficient manner forfastening the plates to the auxiliary magnet.

The magnetic resistance of the auxiliary magnet l2, bein less than themaster magnet I0, permits the removal of parts or tools from the facethereof without danger of displacing or disengaging the entire unit fromthe attachment to the machine tool, audit is therefore advantageous tohave the magnetic power of the master magnet at least three or fourtimes greater than the auxiliary magnet.

By placing the two magnets in a manner whereby the north poles of eachof the magnets are adjacent and in alignment with one another, they willnot be attracted to one another and will permit them to spend theirentire energy for the purpose of which they are intended, mainly themaster magnet will use all its energy for supporting the assembleddevice to the magnet attracting surface of a machine tool or the like,while the auxiliary magnet would spend all its energy in supportingtools or small parts thereon.

If the unlike poles of the two magnets are placed in alignment with oneanother, the attraction of the master magnet for the auxiliary magnetwould be so great that the'auxiliary magnet would have little or noenergy left for supporting tools or the like.

It is further manifest to anyone familiar with the art, that the devicecannot be applied to a non-magnetic surface nor can it be employed tosupport parts and tools constructed of a nonmagnetic metal.

In the chosen embodiments of my invention, there are features notheretofore revealed in the prior art and although I have shown anddescribed the particular arrangement of the component parts constitutingthe device, I am fully cognizant of the fact that there may be changesmade in their form and configuration without affecting theiroperativeness, and I reserve the right to make such changes as do notdepart from the spirit of my invention or the scope of the appendedclaims.

Having thus described my invention, what I claim and desire to secure byLetters Patent in the United States is:

1. A magnetic support of the character described comprising a mastermagnet and an auxiliary magnet arranged in parallel spaced relation, anon-magnetic plate interposed between said magnets, said non-magneticplate being in contact with said magnets, non-magnetic means forsecuring said magnets and said non-magnetic plate together, saidauxiliary magnet being of substantially less magnetic power than saidmaster magnet, and the poles of said magnets being arranged in repellingjuxtaposition with one another.

2. A magnetic support of the character described comprising a mastermagnet of U-shape construction and an auxiliary magnet of U -shapedconstruction, said magnets being arranged in spaced parallel relation, anon-magnetic plate interposed between said magnets, said non-magneticplate being in contact with said magnets, said magnets having respectivelegs extending outwardly at right angles to the body of said magnets andsaid non-magnetic plate, non-magnetic means for securing said magnetsand'said non-magnetic plate together, said auxiliary magnet being ofsubstantially less magnetic power than said master magnet, and the polesof said magnets being arranged in repelling juxtaposition with oneanother.

. CLEMENS O. JAEGER REFERENCES CITED The following references are ofrecord in the file of this patent:

UNITED STATES PATENTS

